With "What is casino hand pay?" in mind, one rule covers most of it: every detail must line up before coins are sent. A coin deposit travels on a public network, and the casino only sees it once that network has confirmed the transfer. The coin, the network it runs on, the address and sometimes a memo all have to match what the deposit page shows. Most failed crypto payments come from a mismatch in one of those details, and very few can be undone once sent.
Withdrawals run the same route in reverse: the player supplies an address, and the casino sends coins on the network it supports. An address from a wallet or exchange that does not support that network can lose the payment, so the receiving side deserves the same care as the sending one. A small test transfer before a large one costs one extra fee and confirms the whole route, including any tag the receiving account needs.
A deposit address is long and unforgiving, so it is safer pasted from the cashier than typed by hand. Some networks also need a memo or destination tag that tells the casino which account the coins belong to. A transfer without the tag reaches the casino's shared address with no owner attached, and it waits for support to match it manually. Copying both fields fresh for every deposit avoids sending to an address the casino has since retired.
The sender pays it at the moment of sending, and its size depends on how much demand the network faces right then.
Many coins run on several networks, and a casino accepts each on only one or two; coins sent on another network may reach an address nobody watches.
After the network confirms the transfer a set number of times, which the casino chooses; that takes seconds on fast networks and an hour or more on busy ones.
Whether the receiving wallet or exchange supports the network the casino sends on, including any tag it requires, or the payment can be lost.